398465140

素因数分解:

$2^2\times 5^1\times {\mathrm{827}}^1\times {\mathrm{24091}}^1$

素因数の和:24927

約数の個数: 24

約数和(自身を含む): 837823392

約数和(自身を除く): 439358252

約数列:

[1, 2, 4, 5, 10, 20, 827, 1654, 3308, 4135, 8270, 16540, 24091, 48182, 96364, 120455, 240910, 481820, 19923257, 39846514, 79693028, 99616285, 199232570, 398465140]

約数ペア:

[(1, 398465140), (2, 199232570), (4, 99616285), (5, 79693028), (10, 39846514), (20, 19923257), (827, 481820), (1654, 240910), (3308, 120455), (4135, 96364), (8270, 48182), (16540, 24091)]